为什么"TypeError:参数fn必须是一个函数"?运行Angular项目时发生错误? [英] Why does the "TypeError: argument fn must be a function" error occur when running an Angular project?

问题描述

我刚刚开始学习角度.我正在创建一个空的Angular项目.当我尝试运行项目时，出现如下错误.这可能是原因.

I just started learning angular. I'm creating an empty Angular project. When I try to run the project I get an error like the following. This may be the cause.

ng new intro
ng serve --open

参数fn必须为函数TypeError:参数fn必须为a 功能 在Function.wrapfunction [作为函数]处(C:\ kurs \ angularProjects \ intro \ node_modules \ depd \ index.js:399:11) 在populateConstructorExports(C:\ kurs \ angularProjects \ intro \ node_modules \ http-errors \ index.js:264:45) 在对象. (C:\ kurs \ angularProjects \ intro \ node_modules \ http-errors \ index.js:30:1) 在Module._compile(内部/模块/cjs/loader.js:776:30) 在Object.Module._extensions..js(internal/modules/cjs/loader.js:787:10) 在Module.load(internal/modules/cjs/loader.js:643:32) 在Function.Module._load(internal/modules/cjs/loader.js:556:12) 在Module.require(internal/modules/cjs/loader.js:683:19) 在要求时(内部/模块/cjs/helpers.js:16:16) 在对象. (C:\ kurs \ angularProjects \ intro \ node_modules \ send \ index.js:15:19) 在Module._compile(内部/模块/cjs/loader.js:776:30) 在Object.Module._extensions..js(internal/modules/cjs/loader.js:787:10) 在Module.load(internal/modules/cjs/loader.js:643:32) 在Function.Module._load(internal/modules/cjs/loader.js:556:12) 在Module.require(internal/modules/cjs/loader.js:683:19) 在要求时(internal/modules/cjs/helpers.js:16:16)

argument fn must be a function TypeError: argument fn must be a function at Function.wrapfunction [as function] (C:\kurs\angularProjects\intro\node_modules\depd\index.js:399:11) at populateConstructorExports (C:\kurs\angularProjects\intro\node_modules\http-errors\index.js:264:45) at Object. (C:\kurs\angularProjects\intro\node_modules\http-errors\index.js:30:1) at Module._compile (internal/modules/cjs/loader.js:776:30) at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10) at Module.load (internal/modules/cjs/loader.js:643:32) at Function.Module._load (internal/modules/cjs/loader.js:556:12) at Module.require (internal/modules/cjs/loader.js:683:19) at require (internal/modules/cjs/helpers.js:16:16) at Object. (C:\kurs\angularProjects\intro\node_modules\send\index.js:15:19) at Module._compile (internal/modules/cjs/loader.js:776:30) at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10) at Module.load (internal/modules/cjs/loader.js:643:32) at Function.Module._load (internal/modules/cjs/loader.js:556:12) at Module.require (internal/modules/cjs/loader.js:683:19) at require (internal/modules/cjs/helpers.js:16:16)

推荐答案

问题已为我解决.当前版本为12.6.0的node.js中发生了此错误.我更改了node.js的版本.我安装了LTS 10.16.0版，没有发生任何错误

Problem solved for me. This error occurred in the 12.6.0 Current version of node.js. I changed the version of node.js. I installed LTS version 10.16.0 and no error occurred

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